:root {
  --bg: #0e0e10;
  --bg2: #16161a;
  --bg3: #1e1e24;
  --bg4: #28282f;
  --border: rgba(255,255,255,0.08);
  --border2: rgba(255,255,255,0.14);
  --text: #e8e8ec;
  --text2: #9898a8;
  --text3: #5a5a6a;
  --accent: #7c6af7;
  --accent2: #9d8fff;
  --green: #4ade80;
  --amber: #f59e0b;
  --red: #f87171;
  --blue: #60a5fa;
  --teal: #2dd4bf;
  --mono: 'JetBrains Mono', monospace;
  --sans: 'Noto Sans JP', sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.6;
  min-height: 100vh;
}

/* Header */
header {
  border-bottom: 1px solid var(--border);
  padding: 20px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 100;
  backdrop-filter: blur(8px);
}

.header-left { display: flex; align-items: center; gap: 14px; }

.logo {
  width: 32px; height: 32px;
  background: var(--accent);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 700;
  color: white;
  letter-spacing: -1px;
  flex-shrink: 0;
}

header h1 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.01em;
}

header p {
  font-size: 12px;
  color: var(--text3);
  font-family: var(--mono);
  margin-top: 1px;
}

.search-wrap {
  position: relative;
}

#search {
  background: var(--bg3);
  border: 1px solid var(--border2);
  border-radius: 8px;
  padding: 7px 12px 7px 34px;
  font-size: 13px;
  font-family: var(--sans);
  color: var(--text);
  outline: none;
  width: 220px;
  transition: border-color 0.2s, width 0.2s;
}
#search:focus { border-color: var(--accent); width: 280px; }
#search::placeholder { color: var(--text3); }

.search-icon {
  position: absolute;
  left: 10px; top: 50%;
  transform: translateY(-50%);
  color: var(--text3);
  font-size: 14px;
  pointer-events: none;
}

/* Layout */
.layout {
  display: flex;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 16px 80px;
}

/* Sidebar */
nav {
  width: 220px;
  flex-shrink: 0;
  padding: 28px 16px 28px 0;
  position: sticky;
  top: 72px;
  height: calc(100vh - 72px);
  overflow-y: auto;
}

.nav-section { margin-bottom: 24px; }

.nav-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text3);
  padding: 0 10px;
  margin-bottom: 6px;
}

nav a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 13px;
  color: var(--text2);
  text-decoration: none;
  transition: all 0.15s;
  cursor: pointer;
}
nav a:hover { background: var(--bg3); color: var(--text); }
nav a.active { background: var(--bg3); color: var(--accent2); }
nav a .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.5;
  flex-shrink: 0;
}

/* Main content */
main {
  flex: 1;
  padding: 28px 0 0 32px;
  min-width: 0;
}

.section { display: none; }
.section.active { display: block; }

.section-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 6px;
}
.section-desc {
  font-size: 13px;
  color: var(--text2);
  margin-bottom: 28px;
  line-height: 1.6;
}

h3 {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text3);
  margin: 28px 0 10px;
}
h3:first-of-type { margin-top: 0; }

/* Cards */
.card-grid { display: grid; gap: 6px; }

.card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 16px;
  transition: border-color 0.15s;
}
.card:hover { border-color: var(--border2); }

.card-header {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}

.cmd {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 500;
  color: var(--accent2);
}

.badge {
  font-size: 10px;
  padding: 2px 7px;
  border-radius: 4px;
  font-weight: 500;
  white-space: nowrap;
}
.b-star  { background: rgba(245,158,11,0.15); color: var(--amber); }
.b-auto  { background: rgba(74,222,128,0.12); color: var(--green); }
.b-ctx   { background: rgba(124,106,247,0.15); color: var(--accent2); }
.b-user  { background: rgba(96,165,250,0.12); color: var(--blue); }
.b-proj  { background: rgba(74,222,128,0.12); color: var(--green); }
.b-both  { background: rgba(124,106,247,0.15); color: var(--accent2); }
.b-warn  { background: rgba(248,113,113,0.12); color: var(--red); }
.b-teal  { background: rgba(45,212,191,0.12); color: var(--teal); }

.card-body { font-size: 13px; color: var(--text2); line-height: 1.6; }
.card-body ul { padding-left: 1.4em; margin: 6px 0; }

.card-desc {
  font-size: 13px;
  color: var(--text2);
  line-height: 1.6;
}
.card-desc code {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--teal);
  background: var(--bg4);
  padding: 1px 5px;
  border-radius: 4px;
}

pre {
  margin-top: 8px;
  padding: 10px 12px;
  background: var(--bg4);
  border-radius: 6px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text2);
  overflow-x: auto;
  line-height: 1.6;
  border-left: 2px solid var(--border2);
}

/* Shortcut grid */
.shortcut-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }

.shortcut {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.shortcut .cmd { font-size: 12px; flex-shrink: 0; }
.shortcut-desc { font-size: 12px; color: var(--text2); text-align: right; }

/* Mode cards */
.mode-cards { display: grid; gap: 8px; margin-top: 10px; }
.mode-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 16px;
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 12px;
  align-items: start;
}
.mode-name { font-size: 13px; font-weight: 500; color: var(--text); }
.mode-desc { font-size: 13px; color: var(--text2); }

/* Scope diagram */
.scope-stack { display: grid; gap: 6px; }
.scope-item {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 16px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: center;
}
.scope-name { font-size: 13px; font-weight: 500; }
.scope-path { font-family: var(--mono); font-size: 11px; color: var(--text3); margin-top: 2px; }
.scope-desc { font-size: 12px; color: var(--text2); margin-top: 4px; }

/* Tip */
.tip {
  padding: 12px 16px;
  background: rgba(124,106,247,0.08);
  border: 1px solid rgba(124,106,247,0.2);
  border-radius: 8px;
  font-size: 13px;
  color: var(--text2);
  line-height: 1.6;
  margin-bottom: 20px;
}
.tip code { font-family: var(--mono); font-size: 12px; color: var(--teal); background: var(--bg4); padding: 1px 5px; border-radius: 4px; }
.tip strong { color: var(--text); font-weight: 500; }

/* Legend */
.legend {
  display: flex; flex-wrap: wrap; gap: 10px;
  font-size: 12px; color: var(--text2);
  margin-bottom: 16px;
  padding: 10px 14px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.legend span { display: flex; align-items: center; gap: 5px; }

/* Workflow */
.workflow { display: grid; gap: 0; }
.wf-step {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 0;
  position: relative;
}
.wf-step:not(:last-child) .wf-line {
  position: absolute;
  left: 23px;
  top: 48px;
  bottom: 0;
  width: 2px;
  background: var(--border2);
}
.wf-left { display: flex; flex-direction: column; align-items: center; padding-top: 10px; position: relative; z-index: 1; }
.wf-num {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--bg3);
  border: 1px solid var(--border2);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--text2);
  flex-shrink: 0;
}
.wf-num.improved { background: rgba(124,106,247,0.15); border-color: rgba(124,106,247,0.4); color: var(--accent2); }
.wf-body { padding: 6px 0 24px 16px; }
.wf-title { font-size: 14px; font-weight: 500; color: var(--text); margin-bottom: 4px; }
.wf-current {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 13px;
  color: var(--text2);
  margin-bottom: 8px;
  line-height: 1.55;
}
.wf-current code { font-family: var(--mono); font-size: 12px; color: var(--teal); background: var(--bg4); padding: 1px 5px; border-radius: 4px; }
.wf-improve {
  background: rgba(74,222,128,0.06);
  border: 1px solid rgba(74,222,128,0.18);
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 13px;
  color: var(--text2);
  line-height: 1.6;
}
.wf-improve-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 4px;
}
.wf-improve code { font-family: var(--mono); font-size: 12px; color: var(--teal); background: var(--bg4); padding: 1px 5px; border-radius: 4px; }
.wf-improve ul { margin: 6px 0 0 16px; }
.wf-improve li { margin-bottom: 3px; }

/* File tree */
.file-tree {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text2);
  line-height: 1.8;
}
.file-tree .dir { color: var(--blue); }
.file-tree .important { color: var(--accent2); font-weight: 500; }
.file-tree .comment { color: var(--text3); font-size: 11px; }
.file-tree .new { color: var(--green); }

/* Template card */
.template {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}
.template-header {
  padding: 8px 14px;
  background: var(--bg3);
  border-bottom: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text3);
  display: flex;
  align-items: center;
  gap: 8px;
}
.template-header .filename { color: var(--accent2); font-weight: 500; }
.template pre { border: none; border-radius: 0; margin: 0; background: transparent; padding: 14px 16px; }

/* Search highlight */
.highlight { background: rgba(245,158,11,0.25); border-radius: 2px; }

/* Hidden for search */
.card.hidden, .shortcut.hidden, .mode-card.hidden, .scope-item.hidden { display: none; }

/* Updated tag */
.updated {
  font-size: 10px;
  color: var(--text3);
  font-family: var(--mono);
}

/* Loading indicator */
.loading-text {
  color: var(--text3);
  font-size: 13px;
  padding: 20px 0;
}

/* Rendered markdown content */
.md-rendered {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px 24px;
  margin-top: 10px;
  line-height: 1.7;
  color: var(--text);
}
.md-rendered h1 { font-size: 20px; font-weight: 700; margin: 24px 0 12px; color: var(--text); }
.md-rendered h2 { font-size: 16px; font-weight: 700; margin: 20px 0 10px; color: var(--text); border-bottom: 1px solid var(--border); padding-bottom: 6px; }
.md-rendered h3 { font-size: 14px; margin: 16px 0 8px; color: var(--text2); text-transform: none; letter-spacing: normal; }
.md-rendered h1:first-child, .md-rendered h2:first-child { margin-top: 0; }
.md-rendered p { margin: 8px 0; color: var(--text2); }
.md-rendered ul, .md-rendered ol { margin: 8px 0 8px 20px; color: var(--text2); }
.md-rendered li { margin-bottom: 4px; }
.md-rendered code {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--teal);
  background: var(--bg4);
  padding: 1px 5px;
  border-radius: 4px;
}
.md-rendered pre {
  margin: 10px 0;
  border-left: 2px solid var(--accent);
}
.md-rendered pre code {
  background: transparent;
  padding: 0;
  color: var(--text2);
}
.md-rendered blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 14px;
  color: var(--text3);
  margin: 10px 0;
}
.md-rendered a { color: var(--accent2); text-decoration: none; }
.md-rendered a:hover { text-decoration: underline; }
.md-rendered table { border-collapse: collapse; margin: 10px 0; width: 100%; }
.md-rendered th, .md-rendered td { border: 1px solid var(--border2); padding: 6px 10px; font-size: 13px; }
.md-rendered th { background: var(--bg3); color: var(--text); }
.md-rendered td { color: var(--text2); }
.md-rendered hr { border: none; border-top: 1px solid var(--border); margin: 20px 0; }
.md-rendered strong { color: var(--text); }
.md-rendered img { max-width: 100%; border-radius: 8px; }

/* Scrollbar */
::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 4px; }

@media (max-width: 700px) {
  header { padding: 14px 16px; }
  .layout { padding: 0 8px 60px; }
  nav { display: none; }
  main { padding: 20px 0 0; }
  .shortcut-grid { grid-template-columns: 1fr; }
  .mode-card { grid-template-columns: 1fr; }
  #search { width: 160px; }
  #search:focus { width: 200px; }
}